Concerning my previous email : > A(deg) = A(rad) * 260 / (2 Pi) ; Pi = 3.141592 should of course be : A(deg) = A(rad) * 360 / (2 Pi) ; Pi = 3.141592 Argh ! - birger To UNSUBSCRIBE from the 'meteorobs' email list, use the Web form at: http://www.tiacdot net/users/lewkaren/meteorobs/subscribe.html